• 动态调用webService


    using Microsoft.CSharp;
    using System;
    using System.CodeDom;
    using System.CodeDom.Compiler;
    using System.Collections.Generic;
    using System.IO;
    using System.Linq;
    using System.Net;
    
    using System.Text;
    using System.Web.Services.Description;
    
    namespace RfidRead.UI
    {
        public class WebServiceHelper
        {
            #region InvokeWebService
          
            
           /// <summary>
           /// 动态调用web服务
           /// </summary>
           /// <param name="url">服务器地址</param>
           /// <param name="methodname">方法名</param>
           /// <param name="args">参数</param>
           /// <returns></returns>
            public static object InvokeWebService(string url, string methodname, object[] args)
            {
                return WebServiceHelper.InvokeWebService(url, null, methodname, args);
            }
    
            /// < summary>   
            /// 动态调用web服务   
            /// < /summary>   
            /// < param name="url">WSDL服务地址< /param>   
            /// < param name="classname">类名< /param>   
            /// < param name="methodname">方法名< /param>   
            /// < param name="args">参数< /param>
            /// < returns>< /returns>   
            public static object InvokeWebService(string url, string classname, string methodname, object[] args)
            {
                string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";
                if ((classname == null) || (classname == ""))
                {
                    classname = WebServiceHelper.GetWsClassName(url);
                }
    
                try
                {
                    //获取WSDL   
                    WebClient wc = new WebClient();
                    Stream stream = wc.OpenRead(url + "?WSDL");
                  
                    ServiceDescription sd = ServiceDescription.Read(stream);
                    ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();
                    sdi.AddServiceDescription(sd, "", "");
                    CodeNamespace cn = new CodeNamespace(@namespace);
    
                    //生成客户端代理类代码   
                    CodeCompileUnit ccu = new CodeCompileUnit();
                    ccu.Namespaces.Add(cn);
                    sdi.Import(cn, ccu);
                    CSharpCodeProvider icc = new CSharpCodeProvider();
    
                    //设定编译参数   
                    CompilerParameters cplist = new CompilerParameters();
                    cplist.GenerateExecutable = false;
                    cplist.GenerateInMemory = true;
                    cplist.ReferencedAssemblies.Add("System.dll");
                    cplist.ReferencedAssemblies.Add("System.XML.dll");
                    cplist.ReferencedAssemblies.Add("System.Web.Services.dll");
                    cplist.ReferencedAssemblies.Add("System.Data.dll");
    
                    //编译代理类   
                    CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu);
                    if (true == cr.Errors.HasErrors)
                    {
                        System.Text.StringBuilder sb = new System.Text.StringBuilder();
                        foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors)
                        {
                            sb.Append(ce.ToString());
                            sb.Append(System.Environment.NewLine);
                        }
                        throw new Exception(sb.ToString());
                    }
    
                    //生成代理实例,并调用方法   
                    System.Reflection.Assembly assembly = cr.CompiledAssembly;
                    Type t = assembly.GetType(@namespace + "." + classname, true, true);
                    object obj = Activator.CreateInstance(t);
                    System.Reflection.MethodInfo mi = t.GetMethod(methodname);
                    if (mi==null)
                    {
                        return "false";  //不存在该服务器方法
                    }
                    else
                    {
                            return mi.Invoke(obj, args);
                        
    
                    }
                   
                   
    
                    /*   
                    PropertyInfo propertyInfo = type.GetProperty(propertyname);   
                    return propertyInfo.GetValue(obj, null);   
                    */
                }
                catch (Exception ex)
                {
                    throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));
                }
            }
    
            private static string GetWsClassName(string wsUrl)
            {
                string[] parts = wsUrl.Split('/');
                string[] pps = parts[parts.Length - 1].Split('.');
    
                return pps[0];
            }
            #endregion
        }
    }
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  • 原文地址:https://www.cnblogs.com/junhuang/p/4831379.html
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